Refrigerating apparatus



INVENTOR L. A. PHILIPP REFRIGERATING APPARATUS Filed April 25. 1939 Lawnc1: 19. P/I/LIPP ATTORNEY.

llllllllllll filllllllllllllllllllllv March '30, 1943.

@atented Mandd. 1%3

a series ammcanamc srransros science A. Pbllipp, Detroit, Mich...assigns: to Nash -Kclvinstor Corporation, Detroit,- Mich, a

corporation cl Maryland 2 Claims.

The present invention pertains to a refrigerating apparatus.

An object of the present invention is to protracted on, its supportwithout necessitating attention to the drainage connection.

The invention itself, however, both as to its organization, and itsmethod of operation together with additional objects and advantagesthereof, will best be understood from the following description ofspecific embodiments when read in conjunction with the accompanyingdrawing, in which:

Fig. l is a central vertical longitudinal view in cross section of arefrigerator cabinet showing the invention applied;

Fig. 2 is a view taken along line 2-2 of Fig. 1:

Fig. 3 is a fragmentary vertical longitudinal view in cross section of arefrigerator illustrating a modified form of the invention forcollecting and removing the melted ice defrosted from an evaporator;

Fig. 4 is a fragmentary view in cross section of a refrigeratorillustrating a further modified form of the invention for collecting andremoving the melted ice defrosted from an evaporator;

Fig. 5 is a fragmentary view in cross section of a refrigeratorillustrating a modified form of the invention for vaporizing the watercollected through a small diameter conduit 85 to the evaporator 2d. Theconduit 3c is formed intermediate the compressor unit 28 and condenser32 into a spiral coil 36 in which is fitted a cup-shaped container orbucket 38;. The coil 36 may be soldered, welded, or the like to thecontainer 38 to form a thermal bond therebetween.

Preferably the system is operated so that little or no frost collects onthe surface of the amp-- orator 25. The little frost that does collectis during the cycling of the compressor when there is a rapid withdrawalof gaseous refrigerant from the evaporator, but this frost quickly meltsduring the ofi-cycle of the compressor. The system may however beoperated to collect and 'retain frost on the'surfaces of the evaporatoras is well understood in the art. In this case it is neces sary toperiodically defrost the evaporator. In

order to catch this drip there is positioned he neath the evaporator ashallow pan to. The pan so is carried on and serves also as a cover forthe deep pan or food storage container 52 that is slidably supported onrails dd secured on shelf es. Theshelf M is supported on brackets ddprovided on the side walls of the food storage compartment id.

Secured in the rea wall of the pan d@ is a tube 5t so arranged as topermit drainage of the pan therethrough. The tube is bent to he directeddownwardly to terminate above and to be in alignment with an open funnelshaped mouth 52 or a drain conduit dll'whose opposite end terin thedefrosting pain during the defrosting 'of an evaporator.

Referring to Fig. l in the drawing, a cabinet to is constructed ofinsulated side, top and bottom walls It to provide for a food storagecompartment it. The front wall id is provided with an opening i5 foraccess to the compartment 115 closed by a swingably mounted closuremember 68. A second compartment 20 is provided in the cabinet illwhereinis placed the compressorcondenser unit 22 of a refrigeratingunit.

Secured to and suspended from the top wall within the food storagecompartment i6 is an evaporator 2d. Leading from the evaporator 24 fodrawing heat laden refrigerant therefrom is a conduit 25 connected atits opposite end to the motor compressor unit 28. The compressor 28' 1serves to liquefy therefrigerant to be conducted inmates within the opencontainer 38. The arrangement of the tube W with drain conduit 54 allowsdrainage from pan dd to container 38,

also a ready retraction or withdrawal of the pan so from the compartment,ld may he had. The replacement of the pan dd into position to catch thedrip from the evaporator will align the tube til over the mouth 52 ofconduit Ed.

The condensate in the container or bucket 38 will be in heat exchangerelation with the compressed refrigerant flowing through coil 38 towardthe condenser 32. This relationship will tend to lower the temperatureof the refrigerant in coil 35 while the vaporization of the condensatewill be considerably increased so that the condensate will rapidly passinto the atmosphere in form of vapol. It will be noted that by thisarrangement there is not only eliminated the necessity of manuallyremoving the condensate from the pan, but. also increases the emciencyof the condenser as it permits the refrigerant to enter the condenser ata lower tensperature than normally wouldbe the case.

In the modified form shown in Fig. 3 there is provided a deep pan II forthestorage of foods such as meats and for catching the condensate thatmay drip from the evaporator 24 when it is being defrosted. A drain tube12 is secured in in the pan ill until a predetermined level isreachedwhen it flows through the syphon tube ll into conduit II.

In Fig. 5 there is shown a modified form for the vaporization of thecondensate by arranging an open trough Oll circumferentially on theshell of the motor-compressor unit 82. n A drain conduit 94 terminateswithin the trough 90 emptying therein the condensate defrosted andcollected from an evaporator. The heat created by the operation of thecompressor and transmitted to. to be radiated by the shell will beabsorbed by the condensate or water, in the trough 90, increasing'itsvaporization so that there is provided a means for passing the water inform of vapor into the atmosphere and maintaining a cooler to availmyself of such variations and modifications as may come within the scopeof the appended claims.

Iclaim:

1. Refrigerating apparatus comprising a. cabinet having a compartment, arefrigerant evaporating elementfor cooling said compartment, a

compressor, a condenser connected to said compressor, a storagereceptacle for foods to be refrigerated, a tray cover for the receptaclefor collecting moisture from the evaporating element, and means forconducting said moisture from said tray cover to a point between thecompressor and the condenser in thermal contact with the refrigerantpassing from the compressor to the condenser.

2. Refrigerating apparatus comprising a cabinet having a compartment, arefrigerant evaporating element for cooling said compartment, a

condensing element associated with said evaporating element, a drip traycover device located to. said cover device for receiving and conductingmoisture from said device and the other end thereof positioned outsideof said receptacle and means for conducting moisture from said conduitdevice to the vicinity of said condensing element.

LAWRENCE A. PHILIPP.

